Elastic wave prestack reverse time migration on undulating surfac

Authors

LIU Yang, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China
ZHAO Hu, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China
YIN Cheng, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, ChinaFollow
WU Sihai, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China
DAI Ronghuo, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China
DI Zhixin, School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China

Abstract

At present, seismic exploration is facing many challenges in the "double complex" area, especially the undulating surface make it difficult to accurately image the underground complex structures. In this paper, we have studied the elastic wave prestack reverse time migration method for undulating surface, and a simple and effective treatment method was adopted to solve the free boundary conditions of undulating surface. In addition, the storage strategy of the effective boundary was used to solve the problem of big storage of elastic wave prestack reverse time migration. The numerical experimental results also show that this method can accurately reconstruct the source wave field. Finally, test of SEG Canadian overthrust fault model for undulating surface has further verified the effectiveness of the method proposed in this paper.

Keywords

undulating surfce, elastic wave, reverse time migration, strategy of boundary storage, fine imaging of complicated structure

DOI

10.3969/j.issn.1001-1986.2019.01.028

Recommended Citation

LIU Yang, ZHAO Hu, YIN Cheng, et al. (2019) "Elastic wave prestack reverse time migration on undulating surfac," Coal Geology & Exploration: Vol. 47: Iss. 1, Article 29.
DOI: 10.3969/j.issn.1001-1986.2019.01.028
Available at: https://cge.researchcommons.org/journal/vol47/iss1/29

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